CN104408233A - Arrangement method of engine TMAP (Air Temperature and Manifold Absolutely Pressure) sensor - Google Patents
Arrangement method of engine TMAP (Air Temperature and Manifold Absolutely Pressure) sensor Download PDFInfo
- Publication number
- CN104408233A CN104408233A CN201410609067.5A CN201410609067A CN104408233A CN 104408233 A CN104408233 A CN 104408233A CN 201410609067 A CN201410609067 A CN 201410609067A CN 104408233 A CN104408233 A CN 104408233A
- Authority
- CN
- China
- Prior art keywords
- pressure
- engine
- measuring point
- tmap
- arrangement method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000001052 transient effect Effects 0.000 claims abstract description 12
- 238000004364 calculation method Methods 0.000 claims abstract description 9
- 102100028630 Cytoskeleton-associated protein 2 Human genes 0.000 claims description 30
- 101000766848 Homo sapiens Cytoskeleton-associated protein 2 Proteins 0.000 claims description 30
- WOERBKLLTSWFBY-UHFFFAOYSA-M dihydrogen phosphate;tetramethylazanium Chemical compound C[N+](C)(C)C.OP(O)([O-])=O WOERBKLLTSWFBY-UHFFFAOYSA-M 0.000 claims description 30
- 238000009826 distribution Methods 0.000 claims description 18
- 230000036962 time dependent Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000012827 research and development Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 230000000737 periodic effect Effects 0.000 abstract 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The invention belongs to the technical field of automobile engine development, and particularly relates to an arrangement method of an engine TMAP (Air Temperature and Manifold Absolutely Pressure) sensor. The arrangement method comprises the following steps: (A) collecting geometric models of an engine intake manifold, and grouping and meshing the geometric models; (B) calculating according to engine one-dimensional thermodynamics to obtain periodic transient boundary conditions of each inlet and outlet; (C) applying the periodic transient boundary conditions in the step B to the meshed models obtained by the step A and then performing iterative calculation; (D) discovering a point or a region with the most stable pressure change for arranging the TMAP sensor according to the calculation result. Through the steps, the best TMAP sensor arrangement position can be analyzed before trial production of a sample; meanwhile, effect comparison of different arrangement positions can also be performed. The research and development efficiency is improved and a large amount of material cost is reduced.
Description
Technical field
The invention belongs to motor car engine development technique field, particularly a kind of engine TMAP sensor arrangement method.
Background technology
Engine TMAP sensor is one of sensor important on automobile, detects the air pressure in inlet manifold and temperature, for revising Engine Injection Mass, ensures normal working of engine.And TMAP sensing station is arranged unreasonable, its input is had a great impact.In present stage motor car engine performance history, seldom by the rationality of computing machine fluid dynamics (being called for short CFD) technical Analysis TMAP sensor position, mostly based on design-test-amendment pattern so repeatedly, time-consuming, effort, costly, and can, because be in test difficult to the mobility status determining motor intake manifold inside, make designer be difficult to the basic reason determining to have problems.
Summary of the invention
The object of the present invention is to provide a kind of engine TMAP sensor arrangement method, ensure inlet manifold places TMAP sensor placement location optimization.
For realizing above object, the technical solution used in the present invention is: a kind of engine TMAP sensor arrangement method, comprises the steps: that (A) collects the geometric model of motor intake manifold, and geometric model is divided into groups, stress and strain model; (B) each periodicity transient state boundary condition imported and exported is obtained according to engine one dimension calculation of thermodynamics; (C) the laggard row iteration of periodicity transient state boundary condition that the grid model obtained steps A applies in step B calculates; (D) according to result of calculation, find out pressure change point the most stable or region for arranging TMAP sensor.
Compared with prior art, there is following technique effect in the present invention: by above step, can again before exemplar trial-production, the instantaneous pressure distribution situation in computer virtual environment in simulated engine inlet manifold also analyzes best TMAP sensor position; Also can carry out the Contrast on effect of different position simultaneously.Improve efficiency of research and development, save a large amount of material costs.
Accompanying drawing explanation
Fig. 1 is the perspective view of motor intake manifold, has wherein marked five the first measuring points;
Fig. 2 is engine one dimension Thermodynamic Calculating Model;
Fig. 3 is the inlet flow rate-time curve and temperature in-time curve that calculate according to the model of Fig. 2;
Fig. 4 is three the top hole pressure-time curves exported calculated according to the model of Fig. 2;
Fig. 5 is three the outlet temperature-time curves exported calculated according to the model of Fig. 2;
Fig. 6 is the time dependent curve of pressure of each first measuring point in Fig. 1;
Fig. 7 is inlet manifold maximum pressure distribution plan;
Fig. 8 is inlet manifold minimum pressure distribution plan;
Fig. 9 is air-distributor pressure variance distribution plan;
Figure 10 is schematic flow sheet of the present invention.
Embodiment
Below in conjunction with Fig. 1 to Figure 10, the present invention is described in further detail.
Consult Figure 10, a kind of engine TMAP sensor arrangement method, comprises the steps: that (A) collects the geometric model of motor intake manifold, and geometric model is divided into groups, stress and strain model; (B) each periodicity transient state boundary condition imported and exported of inlet manifold is obtained according to engine one dimension calculation of thermodynamics; (C) the laggard row iteration of periodicity transient state boundary condition that the grid model obtained steps A applies in step B calculates; (D) according to result of calculation, find out pressure change point the most stable or region for arranging TMAP sensor.The basic thought of this method is: the field of original continuous print physical quantity in room and time coordinate, replace with the set of the value of a series of limited discrete point, set up the algebraic equation of relation between variate-value on these discrete points by certain principle, solve set up algebraic equation with obtain solve the approximate solution of variable.Therefore, need here to divide into groups to the geometric model of inlet manifold, stress and strain model, as shown in Figure 1, wherein the curve of smooth transition illustrates so that find out the stereoeffect of inlet manifold the grid model of inlet manifold.In the process of grid division, should ensure coincideing of grid model and realistic model, attentional manipulation number of grid is to ensure that computing velocity is in tolerance interval again.Stress and strain model thinner, grid model and realistic model are coincide, but follow-up computing velocity can be slack-off.Before stress and strain model, inlet manifold is rationally divided into groups, generally can be divided into entrance, outlet, inlet manifold wall, to facilitate follow-up stress and strain model.
Fig. 2 is the one dimension Thermodynamic Calculating Model of engine, can obtain each periodicity transient state boundary condition imported and exported of inlet manifold according to this one-dimensional model.Preferably, periodically transient state boundary condition is inlet flow rate-time curve, temperature in-time curve, top hole pressure-time curve, the outlet temperature-time curve of inlet manifold.As in Figure 3-5, in Fig. 3, the curve first reaching peak value is exactly inlet flow rate-time curve, and another curve is temperature in-time curve; Three curves, three outlets respectively in Fig. 4, Fig. 5.
Because be that periodically transient state calculates, in order to the accuracy of the convergence and result of calculation that ensure computation process, in described step C, at least calculate three entire engine working cycle.
Which, if just need to carry out "ball-park" estimate to go out point and be more suitable for arranging TMAP sensor or comparing several layout points, can process as follows.In described step D, the point that pressure change is the most stable can be found out as follows: (D11) resonator cavity in inlet manifold is found out several first measuring points, these first measuring points can be that user wants layout points common in the point of layout or prior art, and the point1 ~ point5 in Fig. 1 is exactly the first measuring point described here; (D12) the time dependent curve of pressure of each first measuring point is calculated, as shown in Figure 6, the corresponding each point of every bar curve; (D13) according to above-mentioned curve, maximum pressure and the minimum pressure of each first measuring point is obtained; (D14) undulating quantity of each first measuring point is calculated, wherein undulating quantity=maximum pressure-minimum pressure; (D15) that first measuring point that undulating quantity is minimum is the optimum position arranging TMAP sensor.When undulating quantity comparison in difference is large time, can directly can that curve better from figure; But by calculating, the best curve that undulating quantity comparison in difference is little can be identified.
If need to assess whole inlet manifold, see which region is more suitable for arranging TMAP sensor, can process as follows.In described step D, the region that pressure change is the most stable can be found out as follows: (D21) chooses second measuring point in each grid of inlet manifold, the process of the second measuring point only for calculating, and be not used in the judgement of end product, thus not shown in the drawings; (D22) the time dependent curve of pressure of each second measuring point is calculated; (D23) according to above-mentioned curve, maximum pressure and the minimum pressure of each second measuring point is obtained; (D24) draw inlet manifold maximum pressure distribution plan by the maximum pressure of each second measuring point, as shown in Figure 7, in figure, color is more black, represents that the maximum pressure in this region is less; (D25) draw inlet manifold minimum pressure distribution plan by the minimum pressure of each second measuring point, as shown in Figure 8, in figure, color is whiter, represents that the minimum pressure in this region is larger; (D26), minimum pressure distribution plan maximum according to inlet manifold obtains the region that maximum pressure is little, minimum pressure is large and is the optimum position arranging TMAP sensor, is also region black and white in Fig. 8 in Fig. 7.
If the region that maximum pressure is little, minimum pressure is large does not have overlap, namely there is the a-quadrant that maximum pressure is minimum, minimum pressure is second largest and the B region that maximum pressure second is little, minimum pressure is maximum, now, by respectively getting a measuring point in A, B region, compare two measuring points by step D11-D15.
More preferably, also obtain the pressure variance of each second measuring point in described step D23, step 26 is deleted; Comprise the steps: after step D25 that (D27) draws air-distributor pressure variance distribution plan by the pressure variance of each second measuring point, as shown in Figure 9; (D28), minimum pressure distribution plan maximum according to inlet manifold and variance distribution plan obtain that maximum pressure is little, minimum pressure large and the region that variance is little is the optimum position arranging TMAP sensor.Here introduce variance distribution plan, judge that region is out more stable, be more suitable for arranging TMAP sensor.Similarly, if three regions that maximum pressure is minimum, minimum pressure is maximum, variance is minimum do not have overlapping region, the judgement of suspicious region point can be carried out equally according to the method described in the preceding paragraph.
Preferably, in no particular order, the size of mesh opening in steps A is less than 3mm for described steps A, B.If size of mesh opening exceedes this size, then the result badly calculated.
By technical scheme of the present invention, before the trial-production of inlet manifold exemplar, the instantaneous pressure distribution situation of simulated engine inlet manifold judges the quality that TMAP sensing station is arranged and carries out necessary optimization in a computer, the contrast of many layout points quality can be carried out simultaneously, improve efficiency of research and development, save a large amount of material costs.
Claims (7)
1. an engine TMAP sensor arrangement method, comprises the steps:
(A) collect the geometric model of motor intake manifold, and geometric model is divided into groups, stress and strain model;
(B) each periodicity transient state boundary condition imported and exported is obtained according to engine one dimension calculation of thermodynamics;
(C) the laggard row iteration of periodicity transient state boundary condition that the grid model obtained steps A applies in step B calculates;
(D) according to result of calculation, find out pressure change point the most stable or region for arranging TMAP sensor.
2. engine TMAP sensor arrangement method as claimed in claim 1, is characterized in that: described periodicity transient state boundary condition is inlet flow rate-time curve, temperature in-time curve, top hole pressure-time curve, the outlet temperature-time curve of inlet manifold.
3. engine TMAP sensor arrangement method as claimed in claim 1, is characterized in that: in described step C, at least calculates three entire engine working cycle.
4. engine TMAP sensor arrangement method as claimed in claim 1, is characterized in that: in described step D, can find out the point that pressure change is the most stable as follows:
(D11) resonator cavity in inlet manifold is found out several the first measuring points;
(D12) the time dependent curve of pressure of each first measuring point is calculated;
(D13) according to above-mentioned curve, maximum pressure and the minimum pressure of each first measuring point is obtained;
(D14) undulating quantity of each first measuring point is calculated, wherein undulating quantity=maximum pressure-minimum pressure;
(D15) that first measuring point that undulating quantity is minimum is the optimum position arranging TMAP sensor.
5. engine TMAP sensor arrangement method as claimed in claim 1, is characterized in that: in described step D, can find out the region that pressure change is the most stable as follows:
(D21) in each grid of inlet manifold, second measuring point is chosen;
(D22) the time dependent curve of pressure of each second measuring point is calculated;
(D23) according to above-mentioned curve, maximum pressure and the minimum pressure of each second measuring point is obtained;
(D24) inlet manifold maximum pressure distribution plan is drawn by the maximum pressure of each second measuring point;
(D25) inlet manifold minimum pressure distribution plan is drawn by the minimum pressure of each second measuring point;
(D26), minimum pressure distribution plan maximum according to inlet manifold obtains the region that maximum pressure is little, minimum pressure is large and is the optimum position arranging TMAP sensor.
6. engine TMAP sensor arrangement method as claimed in claim 5, is characterized in that: the pressure variance also obtaining each second measuring point in described step D23; Comprise the steps: after step D25
(D27) air-distributor pressure variance distribution plan is drawn by the pressure variance of each second measuring point;
(D28), minimum pressure distribution plan maximum according to inlet manifold and variance distribution plan obtain that maximum pressure is little, minimum pressure large and the region that variance is little is the optimum position arranging TMAP sensor.
7. the engine TMAP sensor arrangement method as described in any one of claim 1-6, is characterized in that: in no particular order, the size of mesh opening in steps A is less than 3mm for described steps A, B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609067.5A CN104408233B (en) | 2014-10-31 | 2014-10-31 | Engine TMAP sensor arrangement methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609067.5A CN104408233B (en) | 2014-10-31 | 2014-10-31 | Engine TMAP sensor arrangement methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104408233A true CN104408233A (en) | 2015-03-11 |
| CN104408233B CN104408233B (en) | 2018-08-14 |
Family
ID=52645864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410609067.5A Active CN104408233B (en) | 2014-10-31 | 2014-10-31 | Engine TMAP sensor arrangement methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104408233B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106055738A (en) * | 2016-05-18 | 2016-10-26 | 奇瑞汽车股份有限公司 | Design method for coupled simulation of engine water jacket and bulk temperature field |
| CN106294964A (en) * | 2016-08-05 | 2017-01-04 | 重庆长安汽车股份有限公司 | A kind of analysis method determining intake manifold pressure sensor position |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622490A (en) * | 2012-03-28 | 2012-08-01 | 奇瑞汽车股份有限公司 | Method for analyzing uniformity of exhaust gas recirculation (EGR) of engine air |
-
2014
- 2014-10-31 CN CN201410609067.5A patent/CN104408233B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622490A (en) * | 2012-03-28 | 2012-08-01 | 奇瑞汽车股份有限公司 | Method for analyzing uniformity of exhaust gas recirculation (EGR) of engine air |
Non-Patent Citations (3)
| Title |
|---|
| 刘秀峰: "《轿车电喷发动机故障诊断与案例解析》", 31 May 2012 * |
| 朱嘉芝等: "《夏利轿车维修图解》", 31 May 2000 * |
| 袁寿其等: "流固耦合作用对螺旋离心泵流场影响的数值分析", 《农业机械学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106055738A (en) * | 2016-05-18 | 2016-10-26 | 奇瑞汽车股份有限公司 | Design method for coupled simulation of engine water jacket and bulk temperature field |
| CN106294964A (en) * | 2016-08-05 | 2017-01-04 | 重庆长安汽车股份有限公司 | A kind of analysis method determining intake manifold pressure sensor position |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104408233B (en) | 2018-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2009087350A5 (en) | ||
| CN102622490A (en) | Method for analyzing uniformity of exhaust gas recirculation (EGR) of engine air | |
| CN105677964A (en) | CFD simulation and grid self-adaption based valve flow coefficient calculating method | |
| EP2045673A3 (en) | Method and apparatus for intelligent control and monitoring in a process control system | |
| JP2019537079A (en) | How to build stochastic models for large-scale renewable energy data | |
| CN103221662A (en) | Air-quantity estimation device for internal combustion engine with supercharger | |
| CN103267507A (en) | Method for extracting flatness errors of mechanical structural plane based on finite element analysis | |
| CN102880757B (en) | Micro-irrigation pressure adjuster design method based on fluid-solid coupling numerical calculation | |
| CN104408233A (en) | Arrangement method of engine TMAP (Air Temperature and Manifold Absolutely Pressure) sensor | |
| CN102207996B (en) | Simulative calculation method for engine lubrication system | |
| Bachmann et al. | Parallel multiple-shooting and collocation optimization with openmodelica | |
| CN104462653A (en) | Engine simulation design method | |
| CN104615835B (en) | A kind of engine intercooler analysis method | |
| US20200290257A1 (en) | Moulding-parameters processing method for an injection press | |
| CN107203364A (en) | A kind of prediction and discrimination method for compressor whole working condition property | |
| CN110442935B (en) | Production beat design and optimization method for automatic equipment | |
| CN105404751A (en) | Method for realizing network unification based on heat-force-electromagnetic field | |
| Nely et al. | Analysis of the capabilities of software products to simulate the behavior of dynamic fluid flows | |
| CN114398728A (en) | Mold temperature simulation analysis method considering cooling water temperature change | |
| CN112800588B (en) | Simulation calculation method for air intake of cabin heat exchanger under transient driving working condition | |
| CN115470726A (en) | Hypersonic inlet channel flow field rapid prediction method based on deep learning | |
| CN105160131A (en) | Engine external EGR uniformity coupling calculation method | |
| CN113505544A (en) | Bicycle motion virtual numerical value wind tunnel system based on finite volume method | |
| CN106294964A (en) | A kind of analysis method determining intake manifold pressure sensor position | |
| CN107862169B (en) | Engine plastic intake manifold vibration calculation method based on gas-solid thermal coupling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |